We are talking about the least worst leaders.

JFK might not be the prefect. People have different points of view about him. But he was using some reasoning and his mind to take decisions. Rulers are not perfect and the decisions do not get 100% acceptance, not even 80% or 70%

But as for Bush, six billions - excpet the few who were cheated and voted for him - agree that he is the worst president for USA and the best to attract the most hatred.